/*
 * @(#)InvalidClassException.java	1.24 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.  
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
 *   
 * This program is free software; you can redistribute it and/or  
 * modify it under the terms of the GNU General Public License version  
 * 2 only, as published by the Free Software Foundation.   
 *   
 * This program is distributed in the hope that it will be useful, but  
 * WITHOUT ANY WARRANTY; without even the implied warranty of  
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
 * General Public License version 2 for more details (a copy is  
 * included at /legal/license.txt).   
 *   
 * You should have received a copy of the GNU General Public License  
 * version 2 along with this work; if not, write to the Free Software  
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
 * 02110-1301 USA   
 *   
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
 * Clara, CA 95054 or visit www.sun.com if you need additional  
 * information or have any questions. 
 *
 */

package java.io;

/**
 * Thrown when the Serialization runtime detects one of the following
 * problems with a Class.
 * <UL>
 * <LI> The serial version of the class does not match that of the class
 *      descriptor read from the stream
 * <LI> The class contains unknown datatypes
 * <LI> The class does not have an accessible no-arg constructor
 * </UL>
 *
 * @author  unascribed
 * @version 1.17, 02/02/00
 * @since   JDK1.1
 */
public class InvalidClassException extends ObjectStreamException {
    /**
     * Name of the invalid class.
     *
     * @serial Name of the invalid class.
     */
    public String classname;

    /**
     * Report a InvalidClassException for the reason specified.
     *
     * @param reason  String describing the reason for the exception.
     */
    public InvalidClassException(String reason) {
	super(reason);
    }

    /**
     * Constructs an InvalidClassException object.
     *
     * @param cname   a String naming the invalid class.
     * @param reason  a String describing the reason for the exception.
     */
    public InvalidClassException(String cname, String reason) {
	super(reason);
	classname = cname;
    }

    /**
     * Produce the message and include the classname, if present.
     */
    public String getMessage() {
	if (classname == null)
	    return super.getMessage();
	else
	    return classname + "; " + super.getMessage();
    }
}
